Big Southern Butte is one of three rhyolitic domes near the center of the Eastern Snake River Plain. The area supports vegetation such as lodgepole pine, aspen, Douglas fir, and manzanita (not common to this region). This impressive formation is one of the largest volcanic domes in the world, yet is one of the youngest (300,000 years old). Hikers who trek to the top of this 7,550-foot high summit are rewarded with spectacular panoramic views stretching for miles.


Near Atomic City, Idaho


Traveling on Highway 20 between Arco and Idaho Falls, towards the south.

Nearest City

Atomic City

Street Address

425 N Capitol
idaho Falls ID, 83402

Mailing Address

PO Box 50498
Idaho Falls ID, 83405

Attraction Type(s)


All Year

What's Nearby

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